So idk how I came across this but I discovered how to make a speaker look like it works and is playing music. This can be toggled to make the music start/stop.
So first what I did was make a print brick. I like using the 1x4x4 Print brick because you can see the speaker the best. Then , depending on how fast you want the speaker to fluctuate, paint the brick a certain grayscale color. I like using a middle ranged gray. After that, paint it with the blink FX color, this will supply it with the movement. Then, put the black traffic light print on the brick, black looks most realistic but the other colors work too. Boom, now you have a functioning speaker to go with all of your speaker needy builds. Just add some toggleable music and toggleable blink paint and your set.
Happy speakering.
Comment if you like or hate. -no more flaming.